Dangerous Liaisons [Sterek]

A Sterek fiction. When Derek realises that Stiles has become a trigger for him he tries to stay away. He knows that waiting until it passes is the best thing for both of them, but after being forced to stay together in a pool for hours Derek can't help but seek Stiles out. Little does he know that he is stirring something in both of them that they didn't even know existed.
Warning: This story does contain smut.